Network Services: DHCP, DNS and NAT

What this unit covers

This unit brings together three core network services. DHCP hands out IP settings, DNS turns names into addresses, and NAT rewrites addresses as packets pass through a router or firewall. The resources were made by GoConqr users, and many follow vendor course chapters, such as the CCNA 2 chapter quizzes and the Windows Server module decks.

Where to start

If DNS is new to you, begin with the flashcard deck Introduction to DNS. It asks what DNS stands for, why we use it, what labels in a domain name are and what an FQDN means. Then move to DNS Records, a quiz, and the deck on DNS zones. For DHCP, open DHCP Service and then the mind map DHCPv4. For NAT, the mind map Chapter 9: NAT for IPv4 explains why public IPv4 addresses must be registered and what NAT does.

Using quizzes and maps together

1. Read a mind map to see how the pieces connect.
2. Take a quiz such as Client Server DHCP-DNS, which asks about transport protocols, ARP and DHCP relay.
3. Note the questions you missed and go back to the matching map or deck.
4. Try again a day later and see what has stuck.

For exam practice, CCNA – NAT PAT and AWS CH 9 Quiz are good places to test yourself. The flashcards on Net+ DNS records suit those working toward CompTIA Network+.

Going deeper

Some notes go beyond the basics. One covers single-label names and the GlobalNames zone, and another covers DHCP snooping. The Windows Server decks walk through DHCP scopes and options, DNS zones, records and forwarding, which is useful for hands-on administration.

Where this unit sits

This unit belongs to the Addressing and Protocols strand of Networks and telecommunications. Teachers can pull a map or quiz straight into a lesson. Choose one resource today and see how far you get.